1. Cabbage vegetables
This kind of vegetable has large leaf area and large transpiration, but its root system is shallow, which requires high soil water content and fertility. Therefore, it is important to supply sufficient nitrogen. If the nitrogen supply is insufficient, the plant is short, the leaves are few, the leaves at the base of stem are easy to wither and fall off, and the tissue is thick and hard. Too much nitrogen and high water content of lateral tissue are not conducive to storage, and easy to suffer from diseases. In the later stage, when the supply of phosphorus and potassium is insufficient, it is not easy to form a ball.
2. Cabbage vegetables
Such vegetables include cabbage, cauliflower, kohlrabi and Brussels sprouts. A small number of cabbage and Chinese cabbage due to limited growth, the absorption of nitrogen, phosphorus, potassium, and before the joint into the ball, due to the increased growth, the absorption of nutrients increases rapidly. Cauliflower has a high intake of nitrogen, phosphorus, and potassium, which can only ensure a long-term supply of N, P, and K. Rotary drum granulator granulates the fertilizer to ensure the supply of high-quality and high-yield brassica vegetables. In addition, cabbage vegetables are typical calcium-loving crops. When crops lack calcium in the soil, calcium deficiency in the formation of plant physiology results in dry leaf edges, which affects yield and quality.
Cauliflower is sensitive to boron. When boron is deficient, it is easy to cause the petiole to crack or the formation of leaflets, the center of the flower stem cracks, and the curd appears brown spots, which are slightly bitter. The solution is to spray "new boron" on the surface of the fertilizer. At the same time, molybdenum, zinc, and iron fertilizers should be applied in time according to the abundance and lack of soil elements.
3. Green leafy vegetables
Such vegetables include spinach, lettuce, celery, coriander, lettuce, fennel, etc. The root system of this kind of vegetables is shallow, growing rapidly, and planting density is large, so the requirement of fertilizer and water is very high. When n is sufficient, the leaves are tender and juicy with less fiber; when n is insufficient, the plants are short, with more fiber, less leaves, yellow and rough color, easy to sprout moss early and lose edible value. Our NPK production line meets the needs of vegetables.
4. Onion and garlic vegetables
These vegetables include leek, garlic, scallion, onion and so on. These vegetables are usually mainly positive nutritional requirements, with appropriate P, K fertilizers. For onion and garlic, it is suitable to control the amount of N fertilizer, while for P and K, it is convenient for onion to grow and garlic to extract moss; for leek, it is necessary to apply N fertilizer again to promote vigorous growth and ensure the next crop yield.